I'm using PMView 3.23 for Windows, though I beleive that this has occurred in previous versions. The scenario:

1) I'm configured to activate capture by PrintScreen.2) I select Capture -> Area of Screen.3) The screen is not ready for capture (not on top, or something on the screen isn't right), or I mis-select the area and need to reselect. So...4) I hit Esc, hoping to cancel and return to PMView. But PMView terminates.

Not a major issue, and I may be doing something wrong (e.g. if there's a way to return that I'm not aware of). But any suggestions are appreciated!